src/Model/Contact.php

   1 <?php
   2 /**
   3  * @file src/Model/Contact.php
   4  */
   5 namespace Friendica\Model;
   6
   7 use Friendica\BaseObject;
   8 use Friendica\Content\Pager;
   9 use Friendica\Core\Config;
  10 use Friendica\Core\Hook;
  11 use Friendica\Core\L10n;
  12 use Friendica\Core\Logger;
  13 use Friendica\Core\Protocol;
  14 use Friendica\Core\System;
  15 use Friendica\Core\Worker;
  16 use Friendica\Database\DBA;
  17 use Friendica\Network\Probe;
  18 use Friendica\Object\Image;
  19 use Friendica\Protocol\ActivityPub;
  20 use Friendica\Protocol\DFRN;
  21 use Friendica\Protocol\Diaspora;
  22 use Friendica\Protocol\OStatus;
  23 use Friendica\Protocol\PortableContact;
  24 use Friendica\Protocol\Salmon;
  25 use Friendica\Util\DateTimeFormat;
  26 use Friendica\Util\Network;
  27 use Friendica\Util\Strings;
  28
  29 /**
  30  * @brief functions for interacting with a contact
  31  */
  32 class Contact extends BaseObject
  33 {
  34         /**
  35          * @deprecated since version 2019.03
  36          * @see User::PAGE_FLAGS_NORMAL
  37          */
  38         const PAGE_NORMAL    = User::PAGE_FLAGS_NORMAL;
  39         /**
  40          * @deprecated since version 2019.03
  41          * @see User::PAGE_FLAGS_SOAPBOX
  42          */
  43         const PAGE_SOAPBOX   = User::PAGE_FLAGS_SOAPBOX;
  44         /**
  45          * @deprecated since version 2019.03
  46          * @see User::PAGE_FLAGS_COMMUNITY
  47          */
  48         const PAGE_COMMUNITY = User::PAGE_FLAGS_COMMUNITY;
  49         /**
  50          * @deprecated since version 2019.03
  51          * @see User::PAGE_FLAGS_FREELOVE
  52          */
  53         const PAGE_FREELOVE  = User::PAGE_FLAGS_FREELOVE;
  54         /**
  55          * @deprecated since version 2019.03
  56          * @see User::PAGE_FLAGS_BLOG
  57          */
  58         const PAGE_BLOG      = User::PAGE_FLAGS_BLOG;
  59         /**
  60          * @deprecated since version 2019.03
  61          * @see User::PAGE_FLAGS_PRVGROUP
  62          */
  63         const PAGE_PRVGROUP  = User::PAGE_FLAGS_PRVGROUP;
  64         /**
  65          * @}
  66          */
  67
  68         /**
  69          * Account types
  70          *
  71          * TYPE_UNKNOWN - the account has been imported from gcontact where this is the default type value
  72          *
  73          * TYPE_PERSON - the account belongs to a person
  74          *      Associated page types: PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE
  75          *
  76          * TYPE_ORGANISATION - the account belongs to an organisation
  77          *      Associated page type: PAGE_SOAPBOX
  78          *
  79          * TYPE_NEWS - the account is a news reflector
  80          *      Associated page type: PAGE_SOAPBOX
  81          *
  82          * TYPE_COMMUNITY - the account is community forum
  83          *      Associated page types: PAGE_COMMUNITY, PAGE_PRVGROUP
  84          *
  85          * TYPE_RELAY - the account is a relay
  86          *      This will only be assigned to contacts, not to user accounts
  87          * @{
  88          */
  89         const TYPE_UNKNOWN =     -1;
  90         const TYPE_PERSON =       User::ACCOUNT_TYPE_PERSON;
  91         const TYPE_ORGANISATION = User::ACCOUNT_TYPE_ORGANISATION;
  92         const TYPE_NEWS =         User::ACCOUNT_TYPE_NEWS;
  93         const TYPE_COMMUNITY =    User::ACCOUNT_TYPE_COMMUNITY;
  94         const TYPE_RELAY =        User::ACCOUNT_TYPE_RELAY;
  95         /**
  96          * @}
  97          */
  98
  99         /**
 100          * Contact_is
 101          *
 102          * Relationship types
 103          * @{
 104          */
 105         const FOLLOWER = 1;
 106         const SHARING  = 2;
 107         const FRIEND   = 3;
 108         /**
 109          * @}
 110          */
 111
 112         /**
 113          * @brief Tests if the given contact is a follower
 114          *
 115          * @param int $cid Either public contact id or user's contact id
 116          * @param int $uid User ID
 117          *
 118          * @return boolean is the contact id a follower?
 119          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 120          * @throws \ImagickException
 121          */
 122         public static function isFollower($cid, $uid)
 123         {
 124                 if (self::isBlockedByUser($cid, $uid)) {
 125                         return false;
 126                 }
 127
 128                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 129                 if (empty($cdata['user'])) {
 130                         return false;
 131                 }
 132
 133                 $condition = ['id' => $cdata['user'], 'rel' => [self::FOLLOWER, self::FRIEND]];
 134                 return DBA::exists('contact', $condition);
 135         }
 136
 137         /**
 138          * @brief Get the basepath for a given contact link
 139          * @todo  Add functionality to store this value in the contact table
 140          *
 141          * @param string $url The contact link
 142          *
 143          * @return string basepath
 144          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 145          * @throws \ImagickException
 146          */
 147         public static function getBasepath($url)
 148         {
 149                 $data = Probe::uri($url);
 150                 if (!empty($data['baseurl'])) {
 151                         return $data['baseurl'];
 152                 }
 153
 154                 // When we can't probe the server, we use some ugly function that does some pattern matching
 155                 return PortableContact::detectServer($url);
 156         }
 157
 158         /**
 159          * Returns the public contact id of the given user id
 160          *
 161          * @param  integer $uid User ID
 162          *
 163          * @return integer|boolean Public contact id for given user id
 164          * @throws Exception
 165          */
 166         public static function getPublicIdByUserId($uid)
 167         {
 168                 $self = DBA::selectFirst('contact', ['url'], ['self' => true, 'uid' => $uid]);
 169                 if (!DBA::isResult($self)) {
 170                         return false;
 171                 }
 172                 return self::getIdForURL($self['url'], 0, true);
 173         }
 174
 175         /**
 176          * @brief Returns the contact id for the user and the public contact id for a given contact id
 177          *
 178          * @param int $cid Either public contact id or user's contact id
 179          * @param int $uid User ID
 180          *
 181          * @return array with public and user's contact id
 182          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 183          * @throws \ImagickException
 184          */
 185         public static function getPublicAndUserContacID($cid, $uid)
 186         {
 187                 if (empty($uid) || empty($cid)) {
 188                         return [];
 189                 }
 190
 191                 $contact = DBA::selectFirst('contact', ['id', 'uid', 'url'], ['id' => $cid]);
 192                 if (!DBA::isResult($contact)) {
 193                         return [];
 194                 }
 195
 196                 // We quit when the user id don't match the user id of the provided contact
 197                 if (($contact['uid'] != $uid) && ($contact['uid'] != 0)) {
 198                         return [];
 199                 }
 200
 201                 if ($contact['uid'] != 0) {
 202                         $pcid = Contact::getIdForURL($contact['url'], 0, true, ['url' => $contact['url']]);
 203                         if (empty($pcid)) {
 204                                 return [];
 205                         }
 206                         $ucid = $contact['id'];
 207                 } else {
 208                         $pcid = $contact['id'];
 209                         $ucid = Contact::getIdForURL($contact['url'], $uid, true);
 210                 }
 211
 212                 return ['public' => $pcid, 'user' => $ucid];
 213         }
 214
 215         /**
 216          * @brief Block contact id for user id
 217          *
 218          * @param int     $cid     Either public contact id or user's contact id
 219          * @param int     $uid     User ID
 220          * @param boolean $blocked Is the contact blocked or unblocked?
 221          * @throws \Exception
 222          */
 223         public static function setBlockedForUser($cid, $uid, $blocked)
 224         {
 225                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 226                 if (empty($cdata)) {
 227                         return;
 228                 }
 229
 230                 if ($cdata['user'] != 0) {
 231                         DBA::update('contact', ['blocked' => $blocked], ['id' => $cdata['user'], 'pending' => false]);
 232                 }
 233
 234                 DBA::update('user-contact', ['blocked' => $blocked], ['cid' => $cdata['public'], 'uid' => $uid], true);
 235         }
 236
 237         /**
 238          * @brief Returns "block" state for contact id and user id
 239          *
 240          * @param int $cid Either public contact id or user's contact id
 241          * @param int $uid User ID
 242          *
 243          * @return boolean is the contact id blocked for the given user?
 244          * @throws \Exception
 245          */
 246         public static function isBlockedByUser($cid, $uid)
 247         {
 248                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 249                 if (empty($cdata)) {
 250                         return;
 251                 }
 252
 253                 $public_blocked = false;
 254
 255                 if (!empty($cdata['public'])) {
 256                         $public_contact = DBA::selectFirst('user-contact', ['blocked'], ['cid' => $cdata['public'], 'uid' => $uid]);
 257                         if (DBA::isResult($public_contact)) {
 258                                 $public_blocked = $public_contact['blocked'];
 259                         }
 260                 }
 261
 262                 $user_blocked = $public_blocked;
 263
 264                 if (!empty($cdata['user'])) {
 265                         $user_contact = DBA::selectFirst('contact', ['blocked'], ['id' => $cdata['user'], 'pending' => false]);
 266                         if (DBA::isResult($user_contact)) {
 267                                 $user_blocked = $user_contact['blocked'];
 268                         }
 269                 }
 270
 271                 if ($user_blocked != $public_blocked) {
 272                         DBA::update('user-contact', ['blocked' => $user_blocked], ['cid' => $cdata['public'], 'uid' => $uid], true);
 273                 }
 274
 275                 return $user_blocked;
 276         }
 277
 278         /**
 279          * @brief Ignore contact id for user id
 280          *
 281          * @param int     $cid     Either public contact id or user's contact id
 282          * @param int     $uid     User ID
 283          * @param boolean $ignored Is the contact ignored or unignored?
 284          * @throws \Exception
 285          */
 286         public static function setIgnoredForUser($cid, $uid, $ignored)
 287         {
 288                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 289                 if (empty($cdata)) {
 290                         return;
 291                 }
 292
 293                 if ($cdata['user'] != 0) {
 294                         DBA::update('contact', ['readonly' => $ignored], ['id' => $cdata['user'], 'pending' => false]);
 295                 }
 296
 297                 DBA::update('user-contact', ['ignored' => $ignored], ['cid' => $cdata['public'], 'uid' => $uid], true);
 298         }
 299
 300         /**
 301          * @brief Returns "ignore" state for contact id and user id
 302          *
 303          * @param int $cid Either public contact id or user's contact id
 304          * @param int $uid User ID
 305          *
 306          * @return boolean is the contact id ignored for the given user?
 307          * @throws \Exception
 308          */
 309         public static function isIgnoredByUser($cid, $uid)
 310         {
 311                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 312                 if (empty($cdata)) {
 313                         return;
 314                 }
 315
 316                 $public_ignored = false;
 317
 318                 if (!empty($cdata['public'])) {
 319                         $public_contact = DBA::selectFirst('user-contact', ['ignored'], ['cid' => $cdata['public'], 'uid' => $uid]);
 320                         if (DBA::isResult($public_contact)) {
 321                                 $public_ignored = $public_contact['ignored'];
 322                         }
 323                 }
 324
 325                 $user_ignored = $public_ignored;
 326
 327                 if (!empty($cdata['user'])) {
 328                         $user_contact = DBA::selectFirst('contact', ['readonly'], ['id' => $cdata['user'], 'pending' => false]);
 329                         if (DBA::isResult($user_contact)) {
 330                                 $user_ignored = $user_contact['readonly'];
 331                         }
 332                 }
 333
 334                 if ($user_ignored != $public_ignored) {
 335                         DBA::update('user-contact', ['ignored' => $user_ignored], ['cid' => $cdata['public'], 'uid' => $uid], true);
 336                 }
 337
 338                 return $user_ignored;
 339         }
 340
 341         /**
 342          * @brief Set "collapsed" for contact id and user id
 343          *
 344          * @param int     $cid       Either public contact id or user's contact id
 345          * @param int     $uid       User ID
 346          * @param boolean $collapsed are the contact's posts collapsed or uncollapsed?
 347          * @throws \Exception
 348          */
 349         public static function setCollapsedForUser($cid, $uid, $collapsed)
 350         {
 351                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 352                 if (empty($cdata)) {
 353                         return;
 354                 }
 355
 356                 DBA::update('user-contact', ['collapsed' => $collapsed], ['cid' => $cdata['public'], 'uid' => $uid], true);
 357         }
 358
 359         /**
 360          * @brief Returns "collapsed" state for contact id and user id
 361          *
 362          * @param int $cid Either public contact id or user's contact id
 363          * @param int $uid User ID
 364          *
 365          * @return boolean is the contact id blocked for the given user?
 366          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 367          * @throws \ImagickException
 368          */
 369         public static function isCollapsedByUser($cid, $uid)
 370         {
 371                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 372                 if (empty($cdata)) {
 373                         return;
 374                 }
 375
 376                 $collapsed = false;
 377
 378                 if (!empty($cdata['public'])) {
 379                         $public_contact = DBA::selectFirst('user-contact', ['collapsed'], ['cid' => $cdata['public'], 'uid' => $uid]);
 380                         if (DBA::isResult($public_contact)) {
 381                                 $collapsed = $public_contact['collapsed'];
 382                         }
 383                 }
 384
 385                 return $collapsed;
 386         }
 387
 388         /**
 389          * @brief Returns a list of contacts belonging in a group
 390          *
 391          * @param int $gid
 392          * @return array
 393          * @throws \Exception
 394          */
 395         public static function getByGroupId($gid)
 396         {
 397                 $return = [];
 398
 399                 if (intval($gid)) {
 400                         $stmt = DBA::p('SELECT `group_member`.`contact-id`, `contact`.*
 401                                 FROM `contact`
 402                                 INNER JOIN `group_member`
 403                                         ON `contact`.`id` = `group_member`.`contact-id`
 404                                 WHERE `gid` = ?
 405                                 AND `contact`.`uid` = ?
 406                                 AND NOT `contact`.`self`
 407                                 AND NOT `contact`.`deleted`
 408                                 AND NOT `contact`.`blocked`
 409                                 AND NOT `contact`.`pending`
 410                                 ORDER BY `contact`.`name` ASC',
 411                                 $gid,
 412                                 local_user()
 413                         );
 414
 415                         if (DBA::isResult($stmt)) {
 416                                 $return = DBA::toArray($stmt);
 417                         }
 418                 }
 419
 420                 return $return;
 421         }
 422
 423         /**
 424          * @brief Returns the count of OStatus contacts in a group
 425          *
 426          * @param int $gid
 427          * @return int
 428          * @throws \Exception
 429          */
 430         public static function getOStatusCountByGroupId($gid)
 431         {
 432                 $return = 0;
 433                 if (intval($gid)) {
 434                         $contacts = DBA::fetchFirst('SELECT COUNT(*) AS `count`
 435                                 FROM `contact`
 436                                 INNER JOIN `group_member`
 437                                         ON `contact`.`id` = `group_member`.`contact-id`
 438                                 WHERE `gid` = ?
 439                                 AND `contact`.`uid` = ?
 440                                 AND `contact`.`network` = ?
 441                                 AND `contact`.`notify` != ""',
 442                                 $gid,
 443                                 local_user(),
 444                                 Protocol::OSTATUS
 445                         );
 446                         $return = $contacts['count'];
 447                 }
 448
 449                 return $return;
 450         }
 451
 452         /**
 453          * Creates the self-contact for the provided user id
 454          *
 455          * @param int $uid
 456          * @return bool Operation success
 457          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 458          */
 459         public static function createSelfFromUserId($uid)
 460         {
 461                 // Only create the entry if it doesn't exist yet
 462                 if (DBA::exists('contact', ['uid' => $uid, 'self' => true])) {
 463                         return true;
 464                 }
 465
 466                 $user = DBA::selectFirst('user', ['uid', 'username', 'nickname'], ['uid' => $uid]);
 467                 if (!DBA::isResult($user)) {
 468                         return false;
 469                 }
 470
 471                 $return = DBA::insert('contact', [
 472                         'uid'         => $user['uid'],
 473                         'created'     => DateTimeFormat::utcNow(),
 474                         'self'        => 1,
 475                         'name'        => $user['username'],
 476                         'nick'        => $user['nickname'],
 477                         'photo'       => System::baseUrl() . '/photo/profile/' . $user['uid'] . '.jpg',
 478                         'thumb'       => System::baseUrl() . '/photo/avatar/'  . $user['uid'] . '.jpg',
 479                         'micro'       => System::baseUrl() . '/photo/micro/'   . $user['uid'] . '.jpg',
 480                         'blocked'     => 0,
 481                         'pending'     => 0,
 482                         'url'         => System::baseUrl() . '/profile/' . $user['nickname'],
 483                         'nurl'        => Strings::normaliseLink(System::baseUrl() . '/profile/' . $user['nickname']),
 484                         'addr'        => $user['nickname'] . '@' . substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3),
 485                         'request'     => System::baseUrl() . '/dfrn_request/' . $user['nickname'],
 486                         'notify'      => System::baseUrl() . '/dfrn_notify/'  . $user['nickname'],
 487                         'poll'        => System::baseUrl() . '/dfrn_poll/'    . $user['nickname'],
 488                         'confirm'     => System::baseUrl() . '/dfrn_confirm/' . $user['nickname'],
 489                         'poco'        => System::baseUrl() . '/poco/'         . $user['nickname'],
 490                         'name-date'   => DateTimeFormat::utcNow(),
 491                         'uri-date'    => DateTimeFormat::utcNow(),
 492                         'avatar-date' => DateTimeFormat::utcNow(),
 493                         'closeness'   => 0
 494                 ]);
 495
 496                 return $return;
 497         }
 498
 499         /**
 500          * Updates the self-contact for the provided user id
 501          *
 502          * @param int     $uid
 503          * @param boolean $update_avatar Force the avatar update
 504          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 505          */
 506         public static function updateSelfFromUserID($uid, $update_avatar = false)
 507         {
 508                 $fields = ['id', 'name', 'nick', 'location', 'about', 'keywords', 'gender', 'avatar',
 509                         'xmpp', 'contact-type', 'forum', 'prv', 'avatar-date', 'url', 'nurl',
 510                         'photo', 'thumb', 'micro', 'addr', 'request', 'notify', 'poll', 'confirm', 'poco'];
 511                 $self = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
 512                 if (!DBA::isResult($self)) {
 513                         return;
 514                 }
 515
 516                 $fields = ['nickname', 'page-flags', 'account-type'];
 517                 $user = DBA::selectFirst('user', $fields, ['uid' => $uid]);
 518                 if (!DBA::isResult($user)) {
 519                         return;
 520                 }
 521
 522                 $fields = ['name', 'photo', 'thumb', 'about', 'address', 'locality', 'region',
 523                         'country-name', 'gender', 'pub_keywords', 'xmpp'];
 524                 $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid, 'is-default' => true]);
 525                 if (!DBA::isResult($profile)) {
 526                         return;
 527                 }
 528
 529                 $fields = ['name' => $profile['name'], 'nick' => $user['nickname'],
 530                         'avatar-date' => $self['avatar-date'], 'location' => Profile::formatLocation($profile),
 531                         'about' => $profile['about'], 'keywords' => $profile['pub_keywords'],
 532                         'gender' => $profile['gender'], 'avatar' => $profile['photo'],
 533                         'contact-type' => $user['account-type'], 'xmpp' => $profile['xmpp']];
 534
 535                 $avatar = Photo::selectFirst(['resource-id', 'type'], ['uid' => $uid, 'profile' => true]);
 536                 if (DBA::isResult($avatar)) {
 537                         if ($update_avatar) {
 538                                 $fields['avatar-date'] = DateTimeFormat::utcNow();
 539                         }
 540
 541                         // Creating the path to the avatar, beginning with the file suffix
 542                         $types = Image::supportedTypes();
 543                         if (isset($types[$avatar['type']])) {
 544                                 $file_suffix = $types[$avatar['type']];
 545                         } else {
 546                                 $file_suffix = 'jpg';
 547                         }
 548
 549                         // We are adding a timestamp value so that other systems won't use cached content
 550                         $timestamp = strtotime($fields['avatar-date']);
 551
 552                         $prefix = System::baseUrl() . '/photo/' .$avatar['resource-id'] . '-';
 553                         $suffix = '.' . $file_suffix . '?ts=' . $timestamp;
 554
 555                         $fields['photo'] = $prefix . '4' . $suffix;
 556                         $fields['thumb'] = $prefix . '5' . $suffix;
 557                         $fields['micro'] = $prefix . '6' . $suffix;
 558                 } else {
 559                         // We hadn't found a photo entry, so we use the default avatar
 560                         $fields['photo'] = System::baseUrl() . '/images/person-300.jpg';
 561                         $fields['thumb'] = System::baseUrl() . '/images/person-80.jpg';
 562                         $fields['micro'] = System::baseUrl() . '/images/person-48.jpg';
 563                 }
 564
 565                 $fields['forum'] = $user['page-flags'] == User::PAGE_FLAGS_COMMUNITY;
 566                 $fields['prv'] = $user['page-flags'] == User::PAGE_FLAGS_PRVGROUP;
 567
 568                 // it seems as if ported accounts can have wrong values, so we make sure that now everything is fine.
 569                 $fields['url'] = System::baseUrl() . '/profile/' . $user['nickname'];
 570                 $fields['nurl'] = Strings::normaliseLink($fields['url']);
 571                 $fields['addr'] = $user['nickname'] . '@' . substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3);
 572                 $fields['request'] = System::baseUrl() . '/dfrn_request/' . $user['nickname'];
 573                 $fields['notify'] = System::baseUrl() . '/dfrn_notify/' . $user['nickname'];
 574                 $fields['poll'] = System::baseUrl() . '/dfrn_poll/'. $user['nickname'];
 575                 $fields['confirm'] = System::baseUrl() . '/dfrn_confirm/' . $user['nickname'];
 576                 $fields['poco'] = System::baseUrl() . '/poco/' . $user['nickname'];
 577
 578                 $update = false;
 579
 580                 foreach ($fields as $field => $content) {
 581                         if ($self[$field] != $content) {
 582                                 $update = true;
 583                         }
 584                 }
 585
 586                 if ($update) {
 587                         $fields['name-date'] = DateTimeFormat::utcNow();
 588                         DBA::update('contact', $fields, ['id' => $self['id']]);
 589
 590                         // Update the public contact as well
 591                         DBA::update('contact', $fields, ['uid' => 0, 'nurl' => $self['nurl']]);
 592
 593                         // Update the profile
 594                         $fields = ['photo' => System::baseUrl() . '/photo/profile/' .$uid . '.jpg',
 595                                 'thumb' => System::baseUrl() . '/photo/avatar/' . $uid .'.jpg'];
 596                         DBA::update('profile', $fields, ['uid' => $uid, 'is-default' => true]);
 597                 }
 598         }
 599
 600         /**
 601          * @brief Marks a contact for removal
 602          *
 603          * @param int $id contact id
 604          * @return null
 605          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 606          */
 607         public static function remove($id)
 608         {
 609                 // We want just to make sure that we don't delete our "self" contact
 610                 $contact = DBA::selectFirst('contact', ['uid'], ['id' => $id, 'self' => false]);
 611                 if (!DBA::isResult($contact) || !intval($contact['uid'])) {
 612                         return;
 613                 }
 614
 615                 // Archive the contact
 616                 DBA::update('contact', ['archive' => true, 'network' => Protocol::PHANTOM, 'deleted' => true], ['id' => $id]);
 617
 618                 // Delete it in the background
 619                 Worker::add(PRIORITY_MEDIUM, 'RemoveContact', $id);
 620         }
 621
 622         /**
 623          * @brief Sends an unfriend message. Does not remove the contact
 624          *
 625          * @param array   $user     User unfriending
 626          * @param array   $contact  Contact unfriended
 627          * @param boolean $dissolve Remove the contact on the remote side
 628          * @return void
 629          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 630          * @throws \ImagickException
 631          */
 632         public static function terminateFriendship(array $user, array $contact, $dissolve = false)
 633         {
 634                 if (empty($contact['network'])) {
 635                         return;
 636                 }
 637                 if (($contact['network'] == Protocol::DFRN) && $dissolve) {
 638                         DFRN::deliver($user, $contact, 'placeholder', true);
 639                 } elseif (in_array($contact['network'], [Protocol::OSTATUS, Protocol::DFRN])) {
 640                         // create an unfollow slap
 641                         $item = [];
 642                         $item['verb'] = NAMESPACE_OSTATUS . "/unfollow";
 643                         $item['follow'] = $contact["url"];
 644                         $item['body'] = '';
 645                         $item['title'] = '';
 646                         $item['guid'] = '';
 647                         $item['tag'] = '';
 648                         $item['attach'] = '';
 649                         $slap = OStatus::salmon($item, $user);
 650
 651                         if (!empty($contact['notify'])) {
 652                                 Salmon::slapper($user, $contact['notify'], $slap);
 653                         }
 654                 } elseif ($contact['network'] == Protocol::DIASPORA) {
 655                         Diaspora::sendUnshare($user, $contact);
 656                 } elseif ($contact['network'] == Protocol::ACTIVITYPUB) {
 657                         ActivityPub\Transmitter::sendContactUndo($contact['url'], $contact['id'], $user['uid']);
 658
 659                         if ($dissolve) {
 660                                 ActivityPub\Transmitter::sendContactReject($contact['url'], $contact['hub-verify'], $user['uid']);
 661                         }
 662                 }
 663         }
 664
 665         /**
 666          * @brief Marks a contact for archival after a communication issue delay
 667          *
 668          * Contact has refused to recognise us as a friend. We will start a countdown.
 669          * If they still don't recognise us in 32 days, the relationship is over,
 670          * and we won't waste any more time trying to communicate with them.
 671          * This provides for the possibility that their database is temporarily messed
 672          * up or some other transient event and that there's a possibility we could recover from it.
 673          *
 674          * @param array $contact contact to mark for archival
 675          * @return null
 676          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 677          */
 678         public static function markForArchival(array $contact)
 679         {
 680                 if (!isset($contact['url']) && !empty($contact['id'])) {
 681                         $fields = ['id', 'url', 'archive', 'self', 'term-date'];
 682                         $contact = DBA::selectFirst('contact', $fields, ['id' => $contact['id']]);
 683                         if (!DBA::isResult($contact)) {
 684                                 return;
 685                         }
 686                 } elseif (!isset($contact['url'])) {
 687                         Logger::log('Empty contact: ' . json_encode($contact) . ' - ' . System::callstack(20), Logger::DEBUG);
 688                 }
 689
 690                 Logger::log('Contact '.$contact['id'].' is marked for archival', Logger::DEBUG);
 691
 692                 // Contact already archived or "self" contact? => nothing to do
 693                 if ($contact['archive'] || $contact['self']) {
 694                         return;
 695                 }
 696
 697                 if ($contact['term-date'] <= DBA::NULL_DATETIME) {
 698                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['id' => $contact['id']]);
 699                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['`nurl` = ? AND `term-date` <= ? AND NOT `self`', Strings::normaliseLink($contact['url']), DBA::NULL_DATETIME]);
 700                 } else {
 701                         /* @todo
 702                          * We really should send a notification to the owner after 2-3 weeks
 703                          * so they won't be surprised when the contact vanishes and can take
 704                          * remedial action if this was a serious mistake or glitch
 705                          */
 706
 707                         /// @todo Check for contact vitality via probing
 708                         $archival_days = Config::get('system', 'archival_days', 32);
 709
 710                         $expiry = $contact['term-date'] . ' + ' . $archival_days . ' days ';
 711                         if (DateTimeFormat::utcNow() > DateTimeFormat::utc($expiry)) {
 712                                 /* Relationship is really truly dead. archive them rather than
 713                                  * delete, though if the owner tries to unarchive them we'll start
 714                                  * the whole process over again.
 715                                  */
 716                                 DBA::update('contact', ['archive' => 1], ['id' => $contact['id']]);
 717                                 DBA::update('contact', ['archive' => 1], ['nurl' => Strings::normaliseLink($contact['url']), 'self' => false]);
 718                         }
 719                 }
 720         }
 721
 722         /**
 723          * @brief Cancels the archival countdown
 724          *
 725          * @see   Contact::markForArchival()
 726          *
 727          * @param array $contact contact to be unmarked for archival
 728          * @return null
 729          * @throws \Exception
 730          */
 731         public static function unmarkForArchival(array $contact)
 732         {
 733                 $condition = ['`id` = ? AND (`term-date` > ? OR `archive`)', $contact['id'], DBA::NULL_DATETIME];
 734                 $exists = DBA::exists('contact', $condition);
 735
 736                 // We don't need to update, we never marked this contact for archival
 737                 if (!$exists) {
 738                         return;
 739                 }
 740
 741                 Logger::log('Contact '.$contact['id'].' is marked as vital again', Logger::DEBUG);
 742
 743                 if (!isset($contact['url']) && !empty($contact['id'])) {
 744                         $fields = ['id', 'url', 'batch'];
 745                         $contact = DBA::selectFirst('contact', $fields, ['id' => $contact['id']]);
 746                         if (!DBA::isResult($contact)) {
 747                                 return;
 748                         }
 749                 }
 750
 751                 // It's a miracle. Our dead contact has inexplicably come back to life.
 752                 $fields = ['term-date' => DBA::NULL_DATETIME, 'archive' => false];
 753                 DBA::update('contact', $fields, ['id' => $contact['id']]);
 754                 DBA::update('contact', $fields, ['nurl' => Strings::normaliseLink($contact['url'])]);
 755
 756                 if (!empty($contact['batch'])) {
 757                         $condition = ['batch' => $contact['batch'], 'contact-type' => self::TYPE_RELAY];
 758                         DBA::update('contact', $fields, $condition);
 759                 }
 760         }
 761
 762         /**
 763          * @brief Get contact data for a given profile link
 764          *
 765          * The function looks at several places (contact table and gcontact table) for the contact
 766          * It caches its result for the same script execution to prevent duplicate calls
 767          *
 768          * @param string $url     The profile link
 769          * @param int    $uid     User id
 770          * @param array  $default If not data was found take this data as default value
 771          *
 772          * @return array Contact data
 773          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 774          */
 775         public static function getDetailsByURL($url, $uid = -1, array $default = [])
 776         {
 777                 static $cache = [];
 778
 779                 if ($url == '') {
 780                         return $default;
 781                 }
 782
 783                 if ($uid == -1) {
 784                         $uid = local_user();
 785                 }
 786
 787                 if (isset($cache[$url][$uid])) {
 788                         return $cache[$url][$uid];
 789                 }
 790
 791                 $ssl_url = str_replace('http://', 'https://', $url);
 792
 793                 // Fetch contact data from the contact table for the given user
 794                 $s = DBA::p("SELECT `id`, `id` AS `cid`, 0 AS `gid`, 0 AS `zid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 795                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, `self`
 796                 FROM `contact` WHERE `nurl` = ? AND `uid` = ?", Strings::normaliseLink($url), $uid);
 797                 $r = DBA::toArray($s);
 798
 799                 // Fetch contact data from the contact table for the given user, checking with the alias
 800                 if (!DBA::isResult($r)) {
 801                         $s = DBA::p("SELECT `id`, `id` AS `cid`, 0 AS `gid`, 0 AS `zid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 802                                 `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, `self`
 803                         FROM `contact` WHERE `alias` IN (?, ?, ?) AND `uid` = ?", Strings::normaliseLink($url), $url, $ssl_url, $uid);
 804                         $r = DBA::toArray($s);
 805                 }
 806
 807                 // Fetch the data from the contact table with "uid=0" (which is filled automatically)
 808                 if (!DBA::isResult($r)) {
 809                         $s = DBA::p("SELECT `id`, 0 AS `cid`, `id` AS `zid`, 0 AS `gid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 810                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, 0 AS `self`
 811                         FROM `contact` WHERE `nurl` = ? AND `uid` = 0", Strings::normaliseLink($url));
 812                         $r = DBA::toArray($s);
 813                 }
 814
 815                 // Fetch the data from the contact table with "uid=0" (which is filled automatically) - checked with the alias
 816                 if (!DBA::isResult($r)) {
 817                         $s = DBA::p("SELECT `id`, 0 AS `cid`, `id` AS `zid`, 0 AS `gid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 818                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, 0 AS `self`
 819                         FROM `contact` WHERE `alias` IN (?, ?, ?) AND `uid` = 0", Strings::normaliseLink($url), $url, $ssl_url);
 820                         $r = DBA::toArray($s);
 821                 }
 822
 823                 // Fetch the data from the gcontact table
 824                 if (!DBA::isResult($r)) {
 825                         $s = DBA::p("SELECT 0 AS `id`, 0 AS `cid`, `id` AS `gid`, 0 AS `zid`, 0 AS `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, '' AS `xmpp`,
 826                         `keywords`, `gender`, `photo`, `photo` AS `thumb`, `photo` AS `micro`, 0 AS `forum`, 0 AS `prv`, `community`, `contact-type`, `birthday`, 0 AS `self`
 827                         FROM `gcontact` WHERE `nurl` = ?", Strings::normaliseLink($url));
 828                         $r = DBA::toArray($s);
 829                 }
 830
 831                 if (DBA::isResult($r)) {
 832                         // If there is more than one entry we filter out the connector networks
 833                         if (count($r) > 1) {
 834                                 foreach ($r as $id => $result) {
 835                                         if ($result["network"] == Protocol::STATUSNET) {
 836                                                 unset($r[$id]);
 837                                         }
 838                                 }
 839                         }
 840
 841                         $profile = array_shift($r);
 842
 843                         // "bd" always contains the upcoming birthday of a contact.
 844                         // "birthday" might contain the birthday including the year of birth.
 845                         if ($profile["birthday"] > DBA::NULL_DATE) {
 846                                 $bd_timestamp = strtotime($profile["birthday"]);
 847                                 $month = date("m", $bd_timestamp);
 848                                 $day = date("d", $bd_timestamp);
 849
 850                                 $current_timestamp = time();
 851                                 $current_year = date("Y", $current_timestamp);
 852                                 $current_month = date("m", $current_timestamp);
 853                                 $current_day = date("d", $current_timestamp);
 854
 855                                 $profile["bd"] = $current_year . "-" . $month . "-" . $day;
 856                                 $current = $current_year . "-" . $current_month . "-" . $current_day;
 857
 858                                 if ($profile["bd"] < $current) {
 859                                         $profile["bd"] = ( ++$current_year) . "-" . $month . "-" . $day;
 860                                 }
 861                         } else {
 862                                 $profile["bd"] = DBA::NULL_DATE;
 863                         }
 864                 } else {
 865                         $profile = $default;
 866                 }
 867
 868                 if (empty($profile["photo"]) && isset($default["photo"])) {
 869                         $profile["photo"] = $default["photo"];
 870                 }
 871
 872                 if (empty($profile["name"]) && isset($default["name"])) {
 873                         $profile["name"] = $default["name"];
 874                 }
 875
 876                 if (empty($profile["network"]) && isset($default["network"])) {
 877                         $profile["network"] = $default["network"];
 878                 }
 879
 880                 if (empty($profile["thumb"]) && isset($profile["photo"])) {
 881                         $profile["thumb"] = $profile["photo"];
 882                 }
 883
 884                 if (empty($profile["micro"]) && isset($profile["thumb"])) {
 885                         $profile["micro"] = $profile["thumb"];
 886                 }
 887
 888                 if ((empty($profile["addr"]) || empty($profile["name"])) && (defaults($profile, "gid", 0) != 0)
 889                         && in_array($profile["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])
 890                 ) {
 891                         Worker::add(PRIORITY_LOW, "UpdateGContact", $profile["gid"]);
 892                 }
 893
 894                 // Show contact details of Diaspora contacts only if connected
 895                 if ((defaults($profile, "cid", 0) == 0) && (defaults($profile, "network", "") == Protocol::DIASPORA)) {
 896                         $profile["location"] = "";
 897                         $profile["about"] = "";
 898                         $profile["gender"] = "";
 899                         $profile["birthday"] = DBA::NULL_DATE;
 900                 }
 901
 902                 $cache[$url][$uid] = $profile;
 903
 904                 return $profile;
 905         }
 906
 907         /**
 908          * @brief Get contact data for a given address
 909          *
 910          * The function looks at several places (contact table and gcontact table) for the contact
 911          *
 912          * @param string $addr The profile link
 913          * @param int    $uid  User id
 914          *
 915          * @return array Contact data
 916          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 917          * @throws \ImagickException
 918          */
 919         public static function getDetailsByAddr($addr, $uid = -1)
 920         {
 921                 if ($addr == '') {
 922                         return [];
 923                 }
 924
 925                 if ($uid == -1) {
 926                         $uid = local_user();
 927                 }
 928
 929                 // Fetch contact data from the contact table for the given user
 930                 $r = q("SELECT `id`, `id` AS `cid`, 0 AS `gid`, 0 AS `zid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 931                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, `self`
 932                         FROM `contact` WHERE `addr` = '%s' AND `uid` = %d AND NOT `deleted`",
 933                         DBA::escape($addr),
 934                         intval($uid)
 935                 );
 936                 // Fetch the data from the contact table with "uid=0" (which is filled automatically)
 937                 if (!DBA::isResult($r)) {
 938                         $r = q("SELECT `id`, 0 AS `cid`, `id` AS `zid`, 0 AS `gid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 939                                 `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, 0 AS `self`
 940                                 FROM `contact` WHERE `addr` = '%s' AND `uid` = 0 AND NOT `deleted`",
 941                                 DBA::escape($addr)
 942                         );
 943                 }
 944
 945                 // Fetch the data from the gcontact table
 946                 if (!DBA::isResult($r)) {
 947                         $r = q("SELECT 0 AS `id`, 0 AS `cid`, `id` AS `gid`, 0 AS `zid`, 0 AS `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, '' AS `xmpp`,
 948                                 `keywords`, `gender`, `photo`, `photo` AS `thumb`, `photo` AS `micro`, `community` AS `forum`, 0 AS `prv`, `community`, `contact-type`, `birthday`, 0 AS `self`
 949                                 FROM `gcontact` WHERE `addr` = '%s'",
 950                                 DBA::escape($addr)
 951                         );
 952                 }
 953
 954                 if (!DBA::isResult($r)) {
 955                         $data = Probe::uri($addr);
 956
 957                         $profile = self::getDetailsByURL($data['url'], $uid);
 958                 } else {
 959                         $profile = $r[0];
 960                 }
 961
 962                 return $profile;
 963         }
 964
 965         /**
 966          * @brief Returns the data array for the photo menu of a given contact
 967          *
 968          * @param array $contact contact
 969          * @param int   $uid     optional, default 0
 970          * @return array
 971          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 972          * @throws \ImagickException
 973          */
 974         public static function photoMenu(array $contact, $uid = 0)
 975         {
 976                 $pm_url = '';
 977                 $status_link = '';
 978                 $photos_link = '';
 979                 $contact_drop_link = '';
 980                 $poke_link = '';
 981
 982                 if ($uid == 0) {
 983                         $uid = local_user();
 984                 }
 985
 986                 if (empty($contact['uid']) || ($contact['uid'] != $uid)) {
 987                         if ($uid == 0) {
 988                                 $profile_link = self::magicLink($contact['url']);
 989                                 $menu = ['profile' => [L10n::t('View Profile'), $profile_link, true]];
 990
 991                                 return $menu;
 992                         }
 993
 994                         // Look for our own contact if the uid doesn't match and isn't public
 995                         $contact_own = DBA::selectFirst('contact', [], ['nurl' => $contact['nurl'], 'network' => $contact['network'], 'uid' => $uid]);
 996                         if (DBA::isResult($contact_own)) {
 997                                 return self::photoMenu($contact_own, $uid);
 998                         }
 999                 }
1000
1001                 $sparkle = false;
1002                 if (($contact['network'] === Protocol::DFRN) && !$contact['self']) {
1003                         $sparkle = true;
1004                         $profile_link = System::baseUrl() . '/redir/' . $contact['id'];
1005                 } else {
1006                         $profile_link = $contact['url'];
1007                 }
1008
1009                 if ($profile_link === 'mailbox') {
1010                         $profile_link = '';
1011                 }
1012
1013                 if ($sparkle) {
1014                         $status_link = $profile_link . '?url=status';
1015                         $photos_link = $profile_link . '?url=photos';
1016                         $profile_link = $profile_link . '?url=profile';
1017                 }
1018
1019                 if (in_array($contact['network'], [Protocol::DFRN, Protocol::DIASPORA]) && !$contact['self']) {
1020                         $pm_url = System::baseUrl() . '/message/new/' . $contact['id'];
1021                 }
1022
1023                 if (($contact['network'] == Protocol::DFRN) && !$contact['self']) {
1024                         $poke_link = System::baseUrl() . '/poke/?f=&c=' . $contact['id'];
1025                 }
1026
1027                 $contact_url = System::baseUrl() . '/contact/' . $contact['id'];
1028
1029                 $posts_link = System::baseUrl() . '/contact/' . $contact['id'] . '/conversations';
1030
1031                 if (!$contact['self']) {
1032                         $contact_drop_link = System::baseUrl() . '/contact/' . $contact['id'] . '/drop?confirm=1';
1033                 }
1034
1035                 /**
1036                  * Menu array:
1037                  * "name" => [ "Label", "link", (bool)Should the link opened in a new tab? ]
1038                  */
1039                 if (empty($contact['uid'])) {
1040                         $connlnk = 'follow/?url=' . $contact['url'];
1041                         $menu = [
1042                                 'profile' => [L10n::t('View Profile'),   $profile_link, true],
1043                                 'network' => [L10n::t('Network Posts'),  $posts_link,   false],
1044                                 'edit'    => [L10n::t('View Contact'),   $contact_url,  false],
1045                                 'follow'  => [L10n::t('Connect/Follow'), $connlnk,      true],
1046                         ];
1047                 } else {
1048                         $menu = [
1049                                 'status'  => [L10n::t('View Status'),   $status_link,       true],
1050                                 'profile' => [L10n::t('View Profile'),  $profile_link,      true],
1051                                 'photos'  => [L10n::t('View Photos'),   $photos_link,       true],
1052                                 'network' => [L10n::t('Network Posts'), $posts_link,        false],
1053                                 'edit'    => [L10n::t('View Contact'),  $contact_url,       false],
1054                                 'drop'    => [L10n::t('Drop Contact'),  $contact_drop_link, false],
1055                                 'pm'      => [L10n::t('Send PM'),       $pm_url,            false],
1056                                 'poke'    => [L10n::t('Poke'),          $poke_link,         false],
1057                         ];
1058                 }
1059
1060                 $args = ['contact' => $contact, 'menu' => &$menu];
1061
1062                 Hook::callAll('contact_photo_menu', $args);
1063
1064                 $menucondensed = [];
1065
1066                 foreach ($menu as $menuname => $menuitem) {
1067                         if ($menuitem[1] != '') {
1068                                 $menucondensed[$menuname] = $menuitem;
1069                         }
1070                 }
1071
1072                 return $menucondensed;
1073         }
1074
1075         /**
1076          * @brief Returns ungrouped contact count or list for user
1077          *
1078          * Returns either the total number of ungrouped contacts for the given user
1079          * id or a paginated list of ungrouped contacts.
1080          *
1081          * @param int $uid uid
1082          * @return array
1083          * @throws \Exception
1084          */
1085         public static function getUngroupedList($uid)
1086         {
1087                 return q("SELECT *
1088                            FROM `contact`
1089                            WHERE `uid` = %d
1090                            AND NOT `self`
1091                            AND NOT `deleted`
1092                            AND NOT `blocked`
1093                            AND NOT `pending`
1094                            AND `id` NOT IN (
1095                                 SELECT DISTINCT(`contact-id`)
1096                                 FROM `group_member`
1097                                 INNER JOIN `group` ON `group`.`id` = `group_member`.`gid`
1098                                 WHERE `group`.`uid` = %d
1099                            )", intval($uid), intval($uid));
1100         }
1101
1102         /**
1103          * @brief Fetch the contact id for a given URL and user
1104          *
1105          * First lookup in the contact table to find a record matching either `url`, `nurl`,
1106          * `addr` or `alias`.
1107          *
1108          * If there's no record and we aren't looking for a public contact, we quit.
1109          * If there's one, we check that it isn't time to update the picture else we
1110          * directly return the found contact id.
1111          *
1112          * Second, we probe the provided $url whether it's http://server.tld/profile or
1113          * nick@server.tld. We quit if we can't get any info back.
1114          *
1115          * Third, we create the contact record if it doesn't exist
1116          *
1117          * Fourth, we update the existing record with the new data (avatar, alias, nick)
1118          * if there's any updates
1119          *
1120          * @param string  $url       Contact URL
1121          * @param integer $uid       The user id for the contact (0 = public contact)
1122          * @param boolean $no_update Don't update the contact
1123          * @param array   $default   Default value for creating the contact when every else fails
1124          * @param boolean $in_loop   Internally used variable to prevent an endless loop
1125          *
1126          * @return integer Contact ID
1127          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1128          * @throws \ImagickException
1129          */
1130         public static function getIdForURL($url, $uid = 0, $no_update = false, $default = [], $in_loop = false)
1131         {
1132                 Logger::log("Get contact data for url " . $url . " and user " . $uid . " - " . System::callstack(), Logger::DEBUG);
1133
1134                 $contact_id = 0;
1135
1136                 if ($url == '') {
1137                         return 0;
1138                 }
1139
1140                 /// @todo Verify if we can't use Contact::getDetailsByUrl instead of the following
1141                 // We first try the nurl (http://server.tld/nick), most common case
1142                 $contact = DBA::selectFirst('contact', ['id', 'avatar', 'avatar-date'], ['nurl' => Strings::normaliseLink($url), 'uid' => $uid, 'deleted' => false]);
1143
1144                 // Then the addr (nick@server.tld)
1145                 if (!DBA::isResult($contact)) {
1146                         $contact = DBA::selectFirst('contact', ['id', 'avatar', 'avatar-date'], ['addr' => $url, 'uid' => $uid, 'deleted' => false]);
1147                 }
1148
1149                 // Then the alias (which could be anything)
1150                 if (!DBA::isResult($contact)) {
1151                         // The link could be provided as http although we stored it as https
1152                         $ssl_url = str_replace('http://', 'https://', $url);
1153                         $condition = ['`alias` IN (?, ?, ?) AND `uid` = ? AND NOT `deleted`', $url, Strings::normaliseLink($url), $ssl_url, $uid];
1154                         $contact = DBA::selectFirst('contact', ['id', 'avatar', 'avatar-date'], $condition);
1155                 }
1156
1157                 if (DBA::isResult($contact)) {
1158                         $contact_id = $contact["id"];
1159
1160                         // Update the contact every 7 days
1161                         $update_contact = ($contact['avatar-date'] < DateTimeFormat::utc('now -7 days'));
1162
1163                         // We force the update if the avatar is empty
1164                         if (empty($contact['avatar'])) {
1165                                 $update_contact = true;
1166                         }
1167                         if (!$update_contact || $no_update) {
1168                                 return $contact_id;
1169                         }
1170                 } elseif ($uid != 0) {
1171                         // Non-existing user-specific contact, exiting
1172                         return 0;
1173                 }
1174
1175                 // When we don't want to update, we look if some of our users already know this contact
1176                 if ($no_update) {
1177                         $fields = ['url', 'addr', 'alias', 'notify', 'poll', 'name', 'nick',
1178                                 'photo', 'keywords', 'location', 'about', 'network',
1179                                 'priority', 'batch', 'request', 'confirm', 'poco'];
1180                         $data = DBA::selectFirst('contact', $fields, ['nurl' => Strings::normaliseLink($url)]);
1181
1182                         if (DBA::isResult($data)) {
1183                                 // For security reasons we don't fetch key data from our users
1184                                 $data["pubkey"] = '';
1185                         }
1186                 } else {
1187                         $data = [];
1188                 }
1189
1190                 if (empty($data)) {
1191                         $data = Probe::uri($url, "", $uid);
1192
1193                         // Ensure that there is a gserver entry
1194                         if (!empty($data['baseurl']) && ($data['network'] != Protocol::PHANTOM)) {
1195                                 PortableContact::checkServer($data['baseurl']);
1196                         }
1197                 }
1198
1199                 // Last try in gcontact for unsupported networks
1200                 if (!in_array($data["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::OSTATUS, Protocol::DIASPORA, Protocol::PUMPIO, Protocol::MAIL, Protocol::FEED])) {
1201                         if ($uid != 0) {
1202                                 return 0;
1203                         }
1204
1205                         // Get data from the gcontact table
1206                         $fields = ['name', 'nick', 'url', 'photo', 'addr', 'alias', 'network'];
1207                         $contact = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($url)]);
1208                         if (!DBA::isResult($contact)) {
1209                                 $contact = DBA::selectFirst('contact', $fields, ['nurl' => Strings::normaliseLink($url)]);
1210                         }
1211
1212                         if (!DBA::isResult($contact)) {
1213                                 $fields = ['url', 'addr', 'alias', 'notify', 'poll', 'name', 'nick',
1214                                         'photo', 'keywords', 'location', 'about', 'network',
1215                                         'priority', 'batch', 'request', 'confirm', 'poco'];
1216                                 $contact = DBA::selectFirst('contact', $fields, ['addr' => $url]);
1217                         }
1218
1219                         // The link could be provided as http although we stored it as https
1220                         $ssl_url = str_replace('http://', 'https://', $url);
1221
1222                         if (!DBA::isResult($contact)) {
1223                                 $condition = ['alias' => [$url, Strings::normaliseLink($url), $ssl_url]];
1224                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1225                         }
1226
1227                         if (!DBA::isResult($contact)) {
1228                                 $fields = ['url', 'addr', 'alias', 'notify', 'poll', 'name', 'nick',
1229                                         'photo', 'network', 'priority', 'batch', 'request', 'confirm'];
1230                                 $condition = ['url' => [$url, Strings::normaliseLink($url), $ssl_url]];
1231                                 $contact = DBA::selectFirst('fcontact', $fields, $condition);
1232                         }
1233
1234                         if (!empty($default)) {
1235                                 $contact = $default;
1236                         }
1237
1238                         if (!DBA::isResult($contact)) {
1239                                 return 0;
1240                         } else {
1241                                 $data = array_merge($data, $contact);
1242                         }
1243                 }
1244
1245                 if (!$contact_id && ($data["alias"] != '') && ($data["alias"] != $url) && !$in_loop) {
1246                         $contact_id = self::getIdForURL($data["alias"], $uid, true, $default, true);
1247                 }
1248
1249                 if (!$contact_id) {
1250                         $fields = [
1251                                 'uid'       => $uid,
1252                                 'created'   => DateTimeFormat::utcNow(),
1253                                 'url'       => $data["url"],
1254                                 'nurl'      => Strings::normaliseLink($data["url"]),
1255                                 'addr'      => $data["addr"],
1256                                 'alias'     => $data["alias"],
1257                                 'notify'    => $data["notify"],
1258                                 'poll'      => $data["poll"],
1259                                 'name'      => $data["name"],
1260                                 'nick'      => $data["nick"],
1261                                 'photo'     => $data["photo"],
1262                                 'keywords'  => $data["keywords"],
1263                                 'location'  => $data["location"],
1264                                 'about'     => $data["about"],
1265                                 'network'   => $data["network"],
1266                                 'pubkey'    => $data["pubkey"],
1267                                 'rel'       => self::SHARING,
1268                                 'priority'  => $data["priority"],
1269                                 'batch'     => $data["batch"],
1270                                 'request'   => $data["request"],
1271                                 'confirm'   => $data["confirm"],
1272                                 'poco'      => $data["poco"],
1273                                 'name-date' => DateTimeFormat::utcNow(),
1274                                 'uri-date'  => DateTimeFormat::utcNow(),
1275                                 'avatar-date' => DateTimeFormat::utcNow(),
1276                                 'writable'  => 1,
1277                                 'blocked'   => 0,
1278                                 'readonly'  => 0,
1279                                 'pending'   => 0];
1280
1281                         $condition = ['nurl' => Strings::normaliseLink($data["url"]), 'uid' => $uid, 'deleted' => false];
1282
1283                         DBA::update('contact', $fields, $condition, true);
1284
1285                         $s = DBA::select('contact', ['id'], $condition, ['order' => ['id'], 'limit' => 2]);
1286                         $contacts = DBA::toArray($s);
1287                         if (!DBA::isResult($contacts)) {
1288                                 return 0;
1289                         }
1290
1291                         $contact_id = $contacts[0]["id"];
1292
1293                         // Update the newly created contact from data in the gcontact table
1294                         $gcontact = DBA::selectFirst('gcontact', ['location', 'about', 'keywords', 'gender'], ['nurl' => Strings::normaliseLink($data["url"])]);
1295                         if (DBA::isResult($gcontact)) {
1296                                 // Only use the information when the probing hadn't fetched these values
1297                                 if ($data['keywords'] != '') {
1298                                         unset($gcontact['keywords']);
1299                                 }
1300                                 if ($data['location'] != '') {
1301                                         unset($gcontact['location']);
1302                                 }
1303                                 if ($data['about'] != '') {
1304                                         unset($gcontact['about']);
1305                                 }
1306                                 DBA::update('contact', $gcontact, ['id' => $contact_id]);
1307                         }
1308
1309                         if (count($contacts) > 1 && $uid == 0 && $contact_id != 0 && $data["url"] != "") {
1310                                 $condition = ["`nurl` = ? AND `uid` = ? AND `id` != ? AND NOT `self`",
1311                                         Strings::normaliseLink($data["url"]), 0, $contact_id];
1312                                 Logger::log('Deleting duplicate contact ' . json_encode($condition), Logger::DEBUG);
1313                                 DBA::delete('contact', $condition);
1314                         }
1315                 }
1316
1317                 self::updateAvatar($data["photo"], $uid, $contact_id);
1318
1319                 $fields = ['url', 'nurl', 'addr', 'alias', 'name', 'nick', 'keywords', 'location', 'about', 'avatar-date', 'pubkey'];
1320                 $contact = DBA::selectFirst('contact', $fields, ['id' => $contact_id]);
1321
1322                 // This condition should always be true
1323                 if (!DBA::isResult($contact)) {
1324                         return $contact_id;
1325                 }
1326
1327                 $updated = ['addr' => $data['addr'],
1328                         'alias' => $data['alias'],
1329                         'url' => $data['url'],
1330                         'nurl' => Strings::normaliseLink($data['url']),
1331                         'name' => $data['name'],
1332                         'nick' => $data['nick']];
1333
1334                 if ($data['keywords'] != '') {
1335                         $updated['keywords'] = $data['keywords'];
1336                 }
1337                 if ($data['location'] != '') {
1338                         $updated['location'] = $data['location'];
1339                 }
1340
1341                 // Update the technical stuff as well - if filled
1342                 if ($data['notify'] != '') {
1343                         $updated['notify'] = $data['notify'];
1344                 }
1345                 if ($data['poll'] != '') {
1346                         $updated['poll'] = $data['poll'];
1347                 }
1348                 if ($data['batch'] != '') {
1349                         $updated['batch'] = $data['batch'];
1350                 }
1351                 if ($data['request'] != '') {
1352                         $updated['request'] = $data['request'];
1353                 }
1354                 if ($data['confirm'] != '') {
1355                         $updated['confirm'] = $data['confirm'];
1356                 }
1357                 if ($data['poco'] != '') {
1358                         $updated['poco'] = $data['poco'];
1359                 }
1360
1361                 // Only fill the pubkey if it had been empty before. We have to prevent identity theft.
1362                 if (empty($contact['pubkey'])) {
1363                         $updated['pubkey'] = $data['pubkey'];
1364                 }
1365
1366                 if (($data["addr"] != $contact["addr"]) || ($data["alias"] != $contact["alias"])) {
1367                         $updated['uri-date'] = DateTimeFormat::utcNow();
1368                 }
1369                 if (($data["name"] != $contact["name"]) || ($data["nick"] != $contact["nick"])) {
1370                         $updated['name-date'] = DateTimeFormat::utcNow();
1371                 }
1372
1373                 $updated['avatar-date'] = DateTimeFormat::utcNow();
1374
1375                 DBA::update('contact', $updated, ['id' => $contact_id], $contact);
1376
1377                 return $contact_id;
1378         }
1379
1380         /**
1381          * @brief Checks if the contact is blocked
1382          *
1383          * @param int $cid contact id
1384          *
1385          * @return boolean Is the contact blocked?
1386          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1387          */
1388         public static function isBlocked($cid)
1389         {
1390                 if ($cid == 0) {
1391                         return false;
1392                 }
1393
1394                 $blocked = DBA::selectFirst('contact', ['blocked', 'url'], ['id' => $cid]);
1395                 if (!DBA::isResult($blocked)) {
1396                         return false;
1397                 }
1398
1399                 if (Network::isUrlBlocked($blocked['url'])) {
1400                         return true;
1401                 }
1402
1403                 return (bool) $blocked['blocked'];
1404         }
1405
1406         /**
1407          * @brief Checks if the contact is hidden
1408          *
1409          * @param int $cid contact id
1410          *
1411          * @return boolean Is the contact hidden?
1412          * @throws \Exception
1413          */
1414         public static function isHidden($cid)
1415         {
1416                 if ($cid == 0) {
1417                         return false;
1418                 }
1419
1420                 $hidden = DBA::selectFirst('contact', ['hidden'], ['id' => $cid]);
1421                 if (!DBA::isResult($hidden)) {
1422                         return false;
1423                 }
1424                 return (bool) $hidden['hidden'];
1425         }
1426
1427         /**
1428          * @brief Returns posts from a given contact url
1429          *
1430          * @param string $contact_url Contact URL
1431          *
1432          * @param bool   $thread_mode
1433          * @param int    $update
1434          * @return string posts in HTML
1435          * @throws \Exception
1436          */
1437         public static function getPostsFromUrl($contact_url, $thread_mode = false, $update = 0)
1438         {
1439                 $a = self::getApp();
1440
1441                 $cid = self::getIdForURL($contact_url);
1442
1443                 $contact = DBA::selectFirst('contact', ['contact-type', 'network'], ['id' => $cid]);
1444                 if (!DBA::isResult($contact)) {
1445                         return '';
1446                 }
1447
1448                 if (in_array($contact["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
1449                         $sql = "(`item`.`uid` = 0 OR (`item`.`uid` = ? AND NOT `item`.`global`))";
1450                 } else {
1451                         $sql = "`item`.`uid` = ?";
1452                 }
1453
1454                 $contact_field = ($contact["contact-type"] == self::TYPE_COMMUNITY ? 'owner-id' : 'author-id');
1455
1456                 if ($thread_mode) {
1457                         $condition = ["`$contact_field` = ? AND `gravity` = ? AND " . $sql,
1458                                 $cid, GRAVITY_PARENT, local_user()];
1459                 } else {
1460                         $condition = ["`$contact_field` = ? AND `gravity` IN (?, ?) AND " . $sql,
1461                                 $cid, GRAVITY_PARENT, GRAVITY_COMMENT, local_user()];
1462                 }
1463
1464                 $pager = new Pager($a->query_string);
1465
1466                 $params = ['order' => ['created' => true],
1467                         'limit' => [$pager->getStart(), $pager->getItemsPerPage()]];
1468
1469                 if ($thread_mode) {
1470                         $r = Item::selectThreadForUser(local_user(), ['uri'], $condition, $params);
1471
1472                         $items = Item::inArray($r);
1473
1474                         $o = conversation($a, $items, $pager, 'contacts', $update, false, 'commented', local_user());
1475                 } else {
1476                         $r = Item::selectForUser(local_user(), [], $condition, $params);
1477
1478                         $items = Item::inArray($r);
1479
1480                         $o = conversation($a, $items, $pager, 'contact-posts', false);
1481                 }
1482
1483                 if (!$update) {
1484                         $o .= $pager->renderMinimal(count($items));
1485                 }
1486
1487                 return $o;
1488         }
1489
1490         /**
1491          * @brief Returns the account type name
1492          *
1493          * The function can be called with either the user or the contact array
1494          *
1495          * @param array $contact contact or user array
1496          * @return string
1497          */
1498         public static function getAccountType(array $contact)
1499         {
1500                 // There are several fields that indicate that the contact or user is a forum
1501                 // "page-flags" is a field in the user table,
1502                 // "forum" and "prv" are used in the contact table. They stand for User::PAGE_FLAGS_COMMUNITY and User::PAGE_FLAGS_PRVGROUP.
1503                 // "community" is used in the gcontact table and is true if the contact is User::PAGE_FLAGS_COMMUNITY or User::PAGE_FLAGS_PRVGROUP.
1504                 if ((isset($contact['page-flags']) && (intval($contact['page-flags']) == User::PAGE_FLAGS_COMMUNITY))
1505                         || (isset($contact['page-flags']) && (intval($contact['page-flags']) == User::PAGE_FLAGS_PRVGROUP))
1506                         || (isset($contact['forum']) && intval($contact['forum']))
1507                         || (isset($contact['prv']) && intval($contact['prv']))
1508                         || (isset($contact['community']) && intval($contact['community']))
1509                 ) {
1510                         $type = self::TYPE_COMMUNITY;
1511                 } else {
1512                         $type = self::TYPE_PERSON;
1513                 }
1514
1515                 // The "contact-type" (contact table) and "account-type" (user table) are more general then the chaos from above.
1516                 if (isset($contact["contact-type"])) {
1517                         $type = $contact["contact-type"];
1518                 }
1519
1520                 if (isset($contact["account-type"])) {
1521                         $type = $contact["account-type"];
1522                 }
1523
1524                 switch ($type) {
1525                         case self::TYPE_ORGANISATION:
1526                                 $account_type = L10n::t("Organisation");
1527                                 break;
1528
1529                         case self::TYPE_NEWS:
1530                                 $account_type = L10n::t('News');
1531                                 break;
1532
1533                         case self::TYPE_COMMUNITY:
1534                                 $account_type = L10n::t("Forum");
1535                                 break;
1536
1537                         default:
1538                                 $account_type = "";
1539                                 break;
1540                 }
1541
1542                 return $account_type;
1543         }
1544
1545         /**
1546          * @brief Blocks a contact
1547          *
1548          * @param int $uid
1549          * @return bool
1550          * @throws \Exception
1551          */
1552         public static function block($uid)
1553         {
1554                 $return = DBA::update('contact', ['blocked' => true], ['id' => $uid]);
1555
1556                 return $return;
1557         }
1558
1559         /**
1560          * @brief Unblocks a contact
1561          *
1562          * @param int $uid
1563          * @return bool
1564          * @throws \Exception
1565          */
1566         public static function unblock($uid)
1567         {
1568                 $return = DBA::update('contact', ['blocked' => false], ['id' => $uid]);
1569
1570                 return $return;
1571         }
1572
1573         /**
1574          * @brief Updates the avatar links in a contact only if needed
1575          *
1576          * @param string $avatar Link to avatar picture
1577          * @param int    $uid    User id of contact owner
1578          * @param int    $cid    Contact id
1579          * @param bool   $force  force picture update
1580          *
1581          * @return array Returns array of the different avatar sizes
1582          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1583          * @throws \ImagickException
1584          */
1585         public static function updateAvatar($avatar, $uid, $cid, $force = false)
1586         {
1587                 $contact = DBA::selectFirst('contact', ['avatar', 'photo', 'thumb', 'micro', 'nurl'], ['id' => $cid]);
1588                 if (!DBA::isResult($contact)) {
1589                         return false;
1590                 } else {
1591                         $data = [$contact["photo"], $contact["thumb"], $contact["micro"]];
1592                 }
1593
1594                 if (($contact["avatar"] != $avatar) || $force) {
1595                         $photos = Photo::importProfilePhoto($avatar, $uid, $cid, true);
1596
1597                         if ($photos) {
1598                                 DBA::update(
1599                                         'contact',
1600                                         ['avatar' => $avatar, 'photo' => $photos[0], 'thumb' => $photos[1], 'micro' => $photos[2], 'avatar-date' => DateTimeFormat::utcNow()],
1601                                         ['id' => $cid]
1602                                 );
1603
1604                                 // Update the public contact (contact id = 0)
1605                                 if ($uid != 0) {
1606                                         $pcontact = DBA::selectFirst('contact', ['id'], ['nurl' => $contact['nurl'], 'uid' => 0]);
1607                                         if (DBA::isResult($pcontact)) {
1608                                                 self::updateAvatar($avatar, 0, $pcontact['id'], $force);
1609                                         }
1610                                 }
1611
1612                                 return $photos;
1613                         }
1614                 }
1615
1616                 return $data;
1617         }
1618
1619         /**
1620          * @param integer $id      contact id
1621          * @param string  $network Optional network we are probing for
1622          * @return boolean
1623          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1624          * @throws \ImagickException
1625          */
1626         public static function updateFromProbe($id, $network = '')
1627         {
1628                 /*
1629                   Warning: Never ever fetch the public key via Probe::uri and write it into the contacts.
1630                   This will reliably kill your communication with Friendica contacts.
1631                  */
1632
1633                 $fields = ['url', 'nurl', 'addr', 'alias', 'batch', 'notify', 'poll', 'poco', 'network'];
1634                 $contact = DBA::selectFirst('contact', $fields, ['id' => $id]);
1635                 if (!DBA::isResult($contact)) {
1636                         return false;
1637                 }
1638
1639                 $ret = Probe::uri($contact["url"], $network);
1640
1641                 // If Probe::uri fails the network code will be different (mostly "feed" or "unkn")
1642                 if (($ret["network"] != $contact["network"]) && !in_array($ret["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, $network])) {
1643                         return false;
1644                 }
1645
1646                 $update = false;
1647
1648                 // make sure to not overwrite existing values with blank entries
1649                 foreach ($ret as $key => $val) {
1650                         if (isset($contact[$key]) && ($contact[$key] != "") && ($val == "")) {
1651                                 $ret[$key] = $contact[$key];
1652                         }
1653
1654                         if (isset($contact[$key]) && ($ret[$key] != $contact[$key])) {
1655                                 $update = true;
1656                         }
1657                 }
1658
1659                 if (!$update) {
1660                         return true;
1661                 }
1662
1663                 DBA::update(
1664                         'contact', [
1665                                 'url'     => $ret['url'],
1666                                 'nurl'    => Strings::normaliseLink($ret['url']),
1667                                 'network' => $ret['network'],
1668                                 'addr'    => $ret['addr'],
1669                                 'alias'   => $ret['alias'],
1670                                 'batch'   => $ret['batch'],
1671                                 'notify'  => $ret['notify'],
1672                                 'poll'    => $ret['poll'],
1673                                 'poco'    => $ret['poco']
1674                         ],
1675                         ['id' => $id]
1676                 );
1677
1678                 // Update the corresponding gcontact entry
1679                 PortableContact::lastUpdated($ret["url"]);
1680
1681                 return true;
1682         }
1683
1684         /**
1685          * Takes a $uid and a url/handle and adds a new contact
1686          * Currently if the contact is DFRN, interactive needs to be true, to redirect to the
1687          * dfrn_request page.
1688          *
1689          * Otherwise this can be used to bulk add StatusNet contacts, Twitter contacts, etc.
1690          *
1691          * Returns an array
1692          * $return['success'] boolean true if successful
1693          * $return['message'] error text if success is false.
1694          *
1695          * @brief Takes a $uid and a url/handle and adds a new contact
1696          * @param int    $uid
1697          * @param string $url
1698          * @param bool   $interactive
1699          * @param string $network
1700          * @return array
1701          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1702          * @throws \ImagickException
1703          */
1704         public static function createFromProbe($uid, $url, $interactive = false, $network = '')
1705         {
1706                 $result = ['cid' => -1, 'success' => false, 'message' => ''];
1707
1708                 $a = \get_app();
1709
1710                 // remove ajax junk, e.g. Twitter
1711                 $url = str_replace('/#!/', '/', $url);
1712
1713                 if (!Network::isUrlAllowed($url)) {
1714                         $result['message'] = L10n::t('Disallowed profile URL.');
1715                         return $result;
1716                 }
1717
1718                 if (Network::isUrlBlocked($url)) {
1719                         $result['message'] = L10n::t('Blocked domain');
1720                         return $result;
1721                 }
1722
1723                 if (!$url) {
1724                         $result['message'] = L10n::t('Connect URL missing.');
1725                         return $result;
1726                 }
1727
1728                 $arr = ['url' => $url, 'contact' => []];
1729
1730                 Hook::callAll('follow', $arr);
1731
1732                 if (empty($arr)) {
1733                         $result['message'] = L10n::t('The contact could not be added. Please check the relevant network credentials in your Settings -> Social Networks page.');
1734                         return $result;
1735                 }
1736
1737                 if (!empty($arr['contact']['name'])) {
1738                         $ret = $arr['contact'];
1739                 } else {
1740                         $ret = Probe::uri($url, $network, $uid, false);
1741                 }
1742
1743                 if (($network != '') && ($ret['network'] != $network)) {
1744                         Logger::log('Expected network ' . $network . ' does not match actual network ' . $ret['network']);
1745                         return $result;
1746                 }
1747
1748                 // check if we already have a contact
1749                 // the poll url is more reliable than the profile url, as we may have
1750                 // indirect links or webfinger links
1751
1752                 $condition = ['uid' => $uid, 'poll' => [$ret['poll'], Strings::normaliseLink($ret['poll'])], 'network' => $ret['network'], 'pending' => false];
1753                 $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
1754                 if (!DBA::isResult($contact)) {
1755                         $condition = ['uid' => $uid, 'nurl' => Strings::normaliseLink($url), 'network' => $ret['network'], 'pending' => false];
1756                         $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
1757                 }
1758
1759                 if (($ret['network'] === Protocol::DFRN) && !DBA::isResult($contact)) {
1760                         if ($interactive) {
1761                                 if (strlen($a->getURLPath())) {
1762                                         $myaddr = bin2hex(System::baseUrl() . '/profile/' . $a->user['nickname']);
1763                                 } else {
1764                                         $myaddr = bin2hex($a->user['nickname'] . '@' . $a->getHostName());
1765                                 }
1766
1767                                 $a->internalRedirect($ret['request'] . "&addr=$myaddr");
1768
1769                                 // NOTREACHED
1770                         }
1771                 } elseif (Config::get('system', 'dfrn_only') && ($ret['network'] != Protocol::DFRN)) {
1772                         $result['message'] = L10n::t('This site is not configured to allow communications with other networks.') . EOL;
1773                         $result['message'] .= L10n::t('No compatible communication protocols or feeds were discovered.') . EOL;
1774                         return $result;
1775                 }
1776
1777                 // This extra param just confuses things, remove it
1778                 if ($ret['network'] === Protocol::DIASPORA) {
1779                         $ret['url'] = str_replace('?absolute=true', '', $ret['url']);
1780                 }
1781
1782                 // do we have enough information?
1783                 if (empty($ret['name']) || empty($ret['poll']) || (empty($ret['url']) && empty($ret['addr']))) {
1784                         $result['message'] .= L10n::t('The profile address specified does not provide adequate information.') . EOL;
1785                         if (empty($ret['poll'])) {
1786                                 $result['message'] .= L10n::t('No compatible communication protocols or feeds were discovered.') . EOL;
1787                         }
1788                         if (empty($ret['name'])) {
1789                                 $result['message'] .= L10n::t('An author or name was not found.') . EOL;
1790                         }
1791                         if (empty($ret['url'])) {
1792                                 $result['message'] .= L10n::t('No browser URL could be matched to this address.') . EOL;
1793                         }
1794                         if (strpos($url, '@') !== false) {
1795                                 $result['message'] .= L10n::t('Unable to match @-style Identity Address with a known protocol or email contact.') . EOL;
1796                                 $result['message'] .= L10n::t('Use mailto: in front of address to force email check.') . EOL;
1797                         }
1798                         return $result;
1799                 }
1800
1801                 if ($ret['network'] === Protocol::OSTATUS && Config::get('system', 'ostatus_disabled')) {
1802                         $result['message'] .= L10n::t('The profile address specified belongs to a network which has been disabled on this site.') . EOL;
1803                         $ret['notify'] = '';
1804                 }
1805
1806                 if (!$ret['notify']) {
1807                         $result['message'] .= L10n::t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL;
1808                 }
1809
1810                 $writeable = ((($ret['network'] === Protocol::OSTATUS) && ($ret['notify'])) ? 1 : 0);
1811
1812                 $subhub = (($ret['network'] === Protocol::OSTATUS) ? true : false);
1813
1814                 $hidden = (($ret['network'] === Protocol::MAIL) ? 1 : 0);
1815
1816                 $pending = in_array($ret['network'], [Protocol::ACTIVITYPUB]);
1817
1818                 if (in_array($ret['network'], [Protocol::MAIL, Protocol::DIASPORA, Protocol::ACTIVITYPUB])) {
1819                         $writeable = 1;
1820                 }
1821
1822                 if (DBA::isResult($contact)) {
1823                         // update contact
1824                         $new_relation = (($contact['rel'] == self::FOLLOWER) ? self::FRIEND : self::SHARING);
1825
1826                         $fields = ['rel' => $new_relation, 'subhub' => $subhub, 'readonly' => false];
1827                         DBA::update('contact', $fields, ['id' => $contact['id']]);
1828                 } else {
1829                         $new_relation = (in_array($ret['network'], [Protocol::MAIL]) ? self::FRIEND : self::SHARING);
1830
1831                         // create contact record
1832                         DBA::insert('contact', [
1833                                 'uid'     => $uid,
1834                                 'created' => DateTimeFormat::utcNow(),
1835                                 'url'     => $ret['url'],
1836                                 'nurl'    => Strings::normaliseLink($ret['url']),
1837                                 'addr'    => $ret['addr'],
1838                                 'alias'   => $ret['alias'],
1839                                 'batch'   => $ret['batch'],
1840                                 'notify'  => $ret['notify'],
1841                                 'poll'    => $ret['poll'],
1842                                 'poco'    => $ret['poco'],
1843                                 'name'    => $ret['name'],
1844                                 'nick'    => $ret['nick'],
1845                                 'network' => $ret['network'],
1846                                 'pubkey'  => $ret['pubkey'],
1847                                 'rel'     => $new_relation,
1848                                 'priority'=> $ret['priority'],
1849                                 'writable'=> $writeable,
1850                                 'hidden'  => $hidden,
1851                                 'blocked' => 0,
1852                                 'readonly'=> 0,
1853                                 'pending' => $pending,
1854                                 'subhub'  => $subhub
1855                         ]);
1856                 }
1857
1858                 $contact = DBA::selectFirst('contact', [], ['url' => $ret['url'], 'network' => $ret['network'], 'uid' => $uid]);
1859                 if (!DBA::isResult($contact)) {
1860                         $result['message'] .= L10n::t('Unable to retrieve contact information.') . EOL;
1861                         return $result;
1862                 }
1863
1864                 $contact_id = $contact['id'];
1865                 $result['cid'] = $contact_id;
1866
1867                 Group::addMember(User::getDefaultGroup($uid, $contact["network"]), $contact_id);
1868
1869                 // Update the avatar
1870                 self::updateAvatar($ret['photo'], $uid, $contact_id);
1871
1872                 // pull feed and consume it, which should subscribe to the hub.
1873
1874                 Worker::add(PRIORITY_HIGH, "OnePoll", $contact_id, "force");
1875
1876                 $owner = User::getOwnerDataById($uid);
1877
1878                 if (DBA::isResult($owner)) {
1879                         if (in_array($contact['network'], [Protocol::OSTATUS, Protocol::DFRN])) {
1880                                 // create a follow slap
1881                                 $item = [];
1882                                 $item['verb'] = ACTIVITY_FOLLOW;
1883                                 $item['follow'] = $contact["url"];
1884                                 $item['body'] = '';
1885                                 $item['title'] = '';
1886                                 $item['guid'] = '';
1887                                 $item['tag'] = '';
1888                                 $item['attach'] = '';
1889
1890                                 $slap = OStatus::salmon($item, $owner);
1891
1892                                 if (!empty($contact['notify'])) {
1893                                         Salmon::slapper($owner, $contact['notify'], $slap);
1894                                 }
1895                         } elseif ($contact['network'] == Protocol::DIASPORA) {
1896                                 $ret = Diaspora::sendShare($a->user, $contact);
1897                                 Logger::log('share returns: ' . $ret);
1898                         } elseif ($contact['network'] == Protocol::ACTIVITYPUB) {
1899                                 $activity_id = ActivityPub\Transmitter::activityIDFromContact($contact_id);
1900                                 if (empty($activity_id)) {
1901                                         // This really should never happen
1902                                         return false;
1903                                 }
1904
1905                                 $ret = ActivityPub\Transmitter::sendActivity('Follow', $contact['url'], $uid, $activity_id);
1906                                 Logger::log('Follow returns: ' . $ret);
1907                         }
1908                 }
1909
1910                 $result['success'] = true;
1911                 return $result;
1912         }
1913
1914         /**
1915          * @brief Updated contact's SSL policy
1916          *
1917          * @param array  $contact    Contact array
1918          * @param string $new_policy New policy, valid: self,full
1919          *
1920          * @return array Contact array with updated values
1921          * @throws \Exception
1922          */
1923         public static function updateSslPolicy(array $contact, $new_policy)
1924         {
1925                 $ssl_changed = false;
1926                 if ((intval($new_policy) == SSL_POLICY_SELFSIGN || $new_policy === 'self') && strstr($contact['url'], 'https:')) {
1927                         $ssl_changed = true;
1928                         $contact['url']     =   str_replace('https:', 'http:', $contact['url']);
1929                         $contact['request'] =   str_replace('https:', 'http:', $contact['request']);
1930                         $contact['notify']  =   str_replace('https:', 'http:', $contact['notify']);
1931                         $contact['poll']    =   str_replace('https:', 'http:', $contact['poll']);
1932                         $contact['confirm'] =   str_replace('https:', 'http:', $contact['confirm']);
1933                         $contact['poco']    =   str_replace('https:', 'http:', $contact['poco']);
1934                 }
1935
1936                 if ((intval($new_policy) == SSL_POLICY_FULL || $new_policy === 'full') && strstr($contact['url'], 'http:')) {
1937                         $ssl_changed = true;
1938                         $contact['url']     =   str_replace('http:', 'https:', $contact['url']);
1939                         $contact['request'] =   str_replace('http:', 'https:', $contact['request']);
1940                         $contact['notify']  =   str_replace('http:', 'https:', $contact['notify']);
1941                         $contact['poll']    =   str_replace('http:', 'https:', $contact['poll']);
1942                         $contact['confirm'] =   str_replace('http:', 'https:', $contact['confirm']);
1943                         $contact['poco']    =   str_replace('http:', 'https:', $contact['poco']);
1944                 }
1945
1946                 if ($ssl_changed) {
1947                         $fields = ['url' => $contact['url'], 'request' => $contact['request'],
1948                                         'notify' => $contact['notify'], 'poll' => $contact['poll'],
1949                                         'confirm' => $contact['confirm'], 'poco' => $contact['poco']];
1950                         DBA::update('contact', $fields, ['id' => $contact['id']]);
1951                 }
1952
1953                 return $contact;
1954         }
1955
1956         public static function addRelationship($importer, $contact, $datarray, $item = '', $sharing = false) {
1957                 // Should always be set
1958                 if (empty($datarray['author-id'])) {
1959                         return;
1960                 }
1961
1962                 $fields = ['url', 'name', 'nick', 'photo', 'network'];
1963                 $pub_contact = DBA::selectFirst('contact', $fields, ['id' => $datarray['author-id']]);
1964                 if (!DBA::isResult($pub_contact)) {
1965                         // Should never happen
1966                         return;
1967                 }
1968
1969                 $url = defaults($datarray, 'author-link', $pub_contact['url']);
1970                 $name = $pub_contact['name'];
1971                 $photo = $pub_contact['photo'];
1972                 $nick = $pub_contact['nick'];
1973                 $network = $pub_contact['network'];
1974
1975                 if (is_array($contact)) {
1976                         if (($contact['rel'] == self::SHARING)
1977                                 || ($sharing && $contact['rel'] == self::FOLLOWER)) {
1978                                 DBA::update('contact', ['rel' => self::FRIEND, 'writable' => true],
1979                                                 ['id' => $contact['id'], 'uid' => $importer['uid']]);
1980                         }
1981
1982                         if ($contact['network'] == Protocol::ACTIVITYPUB) {
1983                                 ActivityPub\Transmitter::sendContactAccept($contact['url'], $contact['hub-verify'], $importer['uid']);
1984                         }
1985
1986                         // send email notification to owner?
1987                 } else {
1988                         if (DBA::exists('contact', ['nurl' => Strings::normaliseLink($url), 'uid' => $importer['uid'], 'pending' => true])) {
1989                                 Logger::log('ignoring duplicated connection request from pending contact ' . $url);
1990                                 return;
1991                         }
1992                         // create contact record
1993                         q("INSERT INTO `contact` (`uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
1994                                 `blocked`, `readonly`, `pending`, `writable`)
1995                                 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1)",
1996                                 intval($importer['uid']),
1997                                 DBA::escape(DateTimeFormat::utcNow()),
1998                                 DBA::escape($url),
1999                                 DBA::escape(Strings::normaliseLink($url)),
2000                                 DBA::escape($name),
2001                                 DBA::escape($nick),
2002                                 DBA::escape($photo),
2003                                 DBA::escape($network),
2004                                 intval(self::FOLLOWER)
2005                         );
2006
2007                         $contact_record = [
2008                                 'id' => DBA::lastInsertId(),
2009                                 'network' => $network,
2010                                 'name' => $name,
2011                                 'url' => $url,
2012                                 'photo' => $photo
2013                         ];
2014
2015                         Contact::updateAvatar($photo, $importer["uid"], $contact_record["id"], true);
2016
2017                         /// @TODO Encapsulate this into a function/method
2018                         $fields = ['uid', 'username', 'email', 'page-flags', 'notify-flags', 'language'];
2019                         $user = DBA::selectFirst('user', $fields, ['uid' => $importer['uid']]);
2020                         if (DBA::isResult($user) && !in_array($user['page-flags'], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_FREELOVE, User::PAGE_FLAGS_COMMUNITY])) {
2021                                 // create notification
2022                                 $hash = Strings::getRandomHex();
2023
2024                                 if (is_array($contact_record)) {
2025                                         DBA::insert('intro', ['uid' => $importer['uid'], 'contact-id' => $contact_record['id'],
2026                                                                 'blocked' => false, 'knowyou' => false,
2027                                                                 'hash' => $hash, 'datetime' => DateTimeFormat::utcNow()]);
2028                                 }
2029
2030                                 Group::addMember(User::getDefaultGroup($importer['uid'], $contact_record["network"]), $contact_record['id']);
2031
2032                                 if (($user['notify-flags'] & NOTIFY_INTRO) &&
2033                                         in_array($user['page-flags'], [User::PAGE_FLAGS_NORMAL])) {
2034
2035                                         notification([
2036                                                 'type'         => NOTIFY_INTRO,
2037                                                 'notify_flags' => $user['notify-flags'],
2038                                                 'language'     => $user['language'],
2039                                                 'to_name'      => $user['username'],
2040                                                 'to_email'     => $user['email'],
2041                                                 'uid'          => $user['uid'],
2042                                                 'link'         => System::baseUrl() . '/notifications/intro',
2043                                                 'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : L10n::t('[Name Withheld]')),
2044                                                 'source_link'  => $contact_record['url'],
2045                                                 'source_photo' => $contact_record['photo'],
2046                                                 'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
2047                                                 'otype'        => 'intro'
2048                                         ]);
2049
2050                                 }
2051                         } elseif (DBA::isResult($user) && in_array($user['page-flags'], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_FREELOVE, User::PAGE_FLAGS_COMMUNITY])) {
2052                                 $condition = ['uid' => $importer['uid'], 'url' => $url, 'pending' => true];
2053                                 DBA::update('contact', ['pending' => false], $condition);
2054
2055                                 $contact = DBA::selectFirst('contact', ['url', 'network', 'hub-verify'], ['id' => $contact_record['id']]);
2056
2057                                 if ($contact['network'] == Protocol::ACTIVITYPUB) {
2058                                         ActivityPub\Transmitter::sendContactAccept($contact['url'], $contact['hub-verify'], $importer['uid']);
2059                                 }
2060                         }
2061                 }
2062         }
2063
2064         public static function removeFollower($importer, $contact, array $datarray = [], $item = "")
2065         {
2066                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::SHARING)) {
2067                         DBA::update('contact', ['rel' => self::SHARING], ['id' => $contact['id']]);
2068                 } else {
2069                         Contact::remove($contact['id']);
2070                 }
2071         }
2072
2073         public static function removeSharer($importer, $contact, array $datarray = [], $item = "")
2074         {
2075                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::FOLLOWER)) {
2076                         DBA::update('contact', ['rel' => self::FOLLOWER], ['id' => $contact['id']]);
2077                 } else {
2078                         Contact::remove($contact['id']);
2079                 }
2080         }
2081
2082         /**
2083          * @brief Create a birthday event.
2084          *
2085          * Update the year and the birthday.
2086          */
2087         public static function updateBirthdays()
2088         {
2089                 $condition = [
2090                         '`bd` != ""
2091                         AND `bd` > "0001-01-01"
2092                         AND SUBSTRING(`bd`, 1, 4) != `bdyear`
2093                         AND (`contact`.`rel` = ? OR `contact`.`rel` = ?)
2094                         AND NOT `contact`.`pending`
2095                         AND NOT `contact`.`hidden`
2096                         AND NOT `contact`.`blocked`
2097                         AND NOT `contact`.`archive`
2098                         AND NOT `contact`.`deleted`',
2099                         Contact::SHARING,
2100                         Contact::FRIEND
2101                 ];
2102
2103                 $contacts = DBA::select('contact', ['id', 'uid', 'name', 'url', 'bd'], $condition);
2104
2105                 while ($contact = DBA::fetch($contacts)) {
2106                         Logger::log('update_contact_birthday: ' . $contact['bd']);
2107
2108                         $nextbd = DateTimeFormat::utcNow('Y') . substr($contact['bd'], 4);
2109
2110                         if (Event::createBirthday($contact, $nextbd)) {
2111                                 // update bdyear
2112                                 DBA::update(
2113                                         'contact',
2114                                         ['bdyear' => substr($nextbd, 0, 4), 'bd' => $nextbd],
2115                                         ['id' => $contact['id']]
2116                                 );
2117                         }
2118                 }
2119         }
2120
2121         /**
2122          * Remove the unavailable contact ids from the provided list
2123          *
2124          * @param array $contact_ids Contact id list
2125          * @throws \Exception
2126          */
2127         public static function pruneUnavailable(array &$contact_ids)
2128         {
2129                 if (empty($contact_ids)) {
2130                         return;
2131                 }
2132
2133                 $str = DBA::escape(implode(',', $contact_ids));
2134
2135                 $stmt = DBA::p("SELECT `id` FROM `contact` WHERE `id` IN ( " . $str . ") AND `blocked` = 0 AND `pending` = 0 AND `archive` = 0");
2136
2137                 $return = [];
2138                 while($contact = DBA::fetch($stmt)) {
2139                         $return[] = $contact['id'];
2140                 }
2141
2142                 DBA::close($stmt);
2143
2144                 $contact_ids = $return;
2145         }
2146
2147         /**
2148          * @brief Returns a magic link to authenticate remote visitors
2149          *
2150          * @todo  check if the return is either a fully qualified URL or a relative path to Friendica basedir
2151          *
2152          * @param string $contact_url The address of the target contact profile
2153          * @param string $url         An url that we will be redirected to after the authentication
2154          *
2155          * @return string with "redir" link
2156          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2157          * @throws \ImagickException
2158          */
2159         public static function magicLink($contact_url, $url = '')
2160         {
2161                 if (!local_user() && !remote_user()) {
2162                         return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
2163                 }
2164
2165                 $cid = self::getIdForURL($contact_url, 0, true);
2166                 if (empty($cid)) {
2167                         return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
2168                 }
2169
2170                 return self::magicLinkbyId($cid, $url);
2171         }
2172
2173         /**
2174          * @brief Returns a magic link to authenticate remote visitors
2175          *
2176          * @param integer $cid The contact id of the target contact profile
2177          * @param string  $url An url that we will be redirected to after the authentication
2178          *
2179          * @return string with "redir" link
2180          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2181          * @throws \ImagickException
2182          */
2183         public static function magicLinkbyId($cid, $url = '')
2184         {
2185                 $contact = DBA::selectFirst('contact', ['id', 'network', 'url', 'uid'], ['id' => $cid]);
2186
2187                 return self::magicLinkbyContact($contact, $url);
2188         }
2189
2190         /**
2191          * @brief Returns a magic link to authenticate remote visitors
2192          *
2193          * @param array  $contact The contact array with "uid", "network" and "url"
2194          * @param string $url     An url that we will be redirected to after the authentication
2195          *
2196          * @return string with "redir" link
2197          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2198          * @throws \ImagickException
2199          */
2200         public static function magicLinkbyContact($contact, $url = '')
2201         {
2202                 if ((!local_user() && !remote_user()) || ($contact['network'] != Protocol::DFRN)) {
2203                         return $url ?: $contact['url']; // Equivalent to ($url != '') ? $url : $contact['url'];
2204                 }
2205
2206                 // Only redirections to the same host do make sense
2207                 if (($url != '') && (parse_url($url, PHP_URL_HOST) != parse_url($contact['url'], PHP_URL_HOST))) {
2208                         return $url;
2209                 }
2210
2211                 if ($contact['uid'] != 0) {
2212                         return self::magicLink($contact['url'], $url);
2213                 }
2214
2215                 $redirect = 'redir/' . $contact['id'];
2216
2217                 if ($url != '') {
2218                         $redirect .= '?url=' . $url;
2219                 }
2220
2221                 return $redirect;
2222         }
2223 }